Sliding sash window construction



Oct. 26, 1943. ALBERT 2,332,979

SLIDING SASH WINDOW CONSTRUCTION Filed Jan. 22, 1942 2 Sheets-Sheet 1 I6 1 ii 3 0 F195 25 five/afar:

Oct. 26, 1943.

ALBERT SLIDING SASH WINDOW CONSTRUCTION 2 Sheets-Sheet 2 Filed Jan. 22,1942 W4 0 N. .W Z Z m 5 I w w wm a w ml a a "Patented case, 1943 UNITEDSTATES PATENT OFFlCE SLIDING SASH WINDOW CONSTRUCTION Felix Albert,Montreal, Quebec, Canada Application January 22, 1942, Serial In CanadaFebruary 1, 1941 Claims.

Figure 12 is a section on the line I2--I2 of Figure 8;

Figure 13 is a fragmentary section, similar to Figure 1; of amodification of the invention;

Figure 14 is an elevation of the operating lever for said modification;

a thief to enter. Moreover, the sashes are locked so that they cannot befurther opened from the outside.

Another object of the invention is to provide a construction permittingthe upper sash to be moved to the bottom of the fixed frame for cleaningand also to permit any desired adjustment of the sashes for properventilation.

Still another object of the invention is to enable easy movement of thesashes, particularly in public buildings or other structures where'thesashes are heavy or out of manual reach. In this connection, the uppersash is heavier than the lower one, so that the window will open upautomatically when a latch or look is released, and the latter can beoperated from a lower level by means of a link or cord suspendedtherefrom. Other objects of the invention, and advantages ofconstruction, will appear as the description proceeds.

The invention is fully disclosed by way of example in the followingdescription and in the accompanying drawings in which:

Figure l is a vertical section of a sliding sash, window constructionaccording to the invention;

Figure 2 is a horizontal section illustrating the lock;

Figure 3 is a vertical section through the lower sash to illustrate thelock;

Figure 4 is the section on the line 4-4 on Figure 3.

Figure 5 is a fragmentary perspective view of the base of one of thetoothed vertical pieces; v

Figure 6 is a detail section similar to Figure 1 and showing the partsin a different position;

Figure 7 is an end view of the operating button;

Figure 8 is a fragmentary perspective view of a vertical member providedwith a stop tooth:

Figure 9 is a fragmentary perspective view of the upper portion ofanother toothed vertical member;

Figure 10 is a section on the line III-I0 of Figure 5;

Figure 11 is a section on the line II-I I of Figure 9;

Figiu'e 15 is a horizontal section illustrating the lock of saidmodification;

Figure 1c is a sectionon the line |s m of Figure 15, and

Figure 17 is a perspective view of the upper portion of the toothedvertical piece in said modification.

Reference to these views will now be made by use of like characterswhich are employed to designate corresponding parts throughout. I

. As shown in Figure 1, the device of the invention comprises two sashesI and 2 as in all sliding sash windows. For convenience in description,the sash I will be designated the inner sash, and the other the outersash. The sashes are illustrated as close in Figure 1 and may be openedby sliding in their respective frames, which is made possible by settingthe sashes in grooves 3 cut in the vertical frame members 4, asillustrated in Figure 2. The sashes I and 2 are suspended from a cord 5trained over a pulley 8 mounted in the top of the frame, the cordhavingits ends secured to the tops of the sashes. Contrary to the usualconstruction, the sashes I and 2 are not balanced, that is, they are notof equal weight. The outer sash 2 is heavier than the inner sash I, andfor this purpose a metal weight I may be inserted in the outer sash andconcealed by painting. As usual the cord 5 and pulley 6 are induplicate, with one set at each side of the frame.

Proceeding now to the novel features of the invention, the sashes I and2 are grooved along an inner vertical edge in order to receive toothedvertical members. These members are two in number and extend one fromthe other, as illustrated in Figure 1. They are slightly different inconstruction and will therefore be described separately. The member inthe sash I includes a vertical strip or plate 9 extending the heightthereof and provided on one side with triangular teeth III as bettershown in perspective in Figure 9.

The top of each tooth I0 lies in a horizontal plane for a purpose thatwill be described below. The member 91s of uniform thickness adjacent tothe teeth III and is slightly thickened atll in the notches I I betweenthe teeth .for a purpose that will also be described below. The top ofthe member 9 is formed with a rib I2 at the-lower edge of which is adownward curve "descending towards the inner surface of the member I4 isformed with a tooth II. The members 3 and I4 are secured to the sash Iby screws Id.

The upper part of the sash 2 is provided in its groove 8 with a member13 similar to the member l4. This member comprises a right angularportion 20, a bead 2|, and teeth 22. At the bottom of the member I9 issecured a member 23 similar to the member 9, by means of screws. Likethe member 9, the member 23 is provided with triangular teeth 24 withtheir horizontal faces downward, rather than upwards, and with notches24' between the teeth. A bead 25 corresponds to the bead I l of themember 9, and the lower end of the member 23 is formed with a rib orflange 26 corresponding to the part l2. Moreover, the member 23 includesa rib or flange 21 along the edge opposite the teeth 24. The flange 21is not of uniform thickness but is undulated in order to form a dentureor rack. The object of this flange is to prevent thieves from piercingthe sash at this point and releasing the lock with an instrument ortool. 1

Transversely of the members 9 and 23, the vertical frame member 4 isshaped to provide a horizontal receptaclefor a box member 28 havingthree sides as shown in Figure 4 and dove-tail in cross section. In themember 28 is slidably mounted a block 29 of similar shape. The member 29is extended outwardly in the form of two horizontal teeth 30, thedistance between said teeth corresponding to the distance between theteeth Ill and 24. One end of the box 28 is perforated to receive a shaft3| extending outwardly and terminating in a button 32 disposed at theinner side of the frame member 4. A hole 33 is drilled in the member 4to receive the shaft. The button 32 is of a larger diameter than theshaft 3|, and a coil spring 32 surrounds the shaft in the hole 33between the end of the box 28 and the button 32.

Normally, and as illustrated in Figure l, the teeth 30 are in contactwith the teeth 13 and 24 respectively in the sashes I and 2. The spring33 secures the position, and the teeth 30 may be released for adjustmentof the sashes by pushing the button 32. When the button is permitted toreturn to normal position under the action of spring 34, after thesashes have been adjusted, the teeth 30 engage with the teeth It and 24and lock the sashes in the adjusted Position. Again, when the button ispulled out, the sashes move automatically in the opening direction dueto the fact that the upper sash 2 is heavier, as previously set forth.

In order to maintain the teeth 30 in a neutral or inoperative position,the button 32 is provided with a tongue 35 adapted to engage with theinner surface of another tongue 36 formed integrally with a plate 31fixed to the frame member 4. The tongue 35 thus causes the spring 34 tobe compressed slightly so that the teeth 30 are moved to an idleposition. A second tongue 38 is formed on the piece 31 to determine anextreme position. of the tongue 35 and button 32. This extreme positionis employed in locking the sashes in a reversed relation from that shownin Figure 1, that is, with 'the sash l upward and the sash 2 downward,as shown inFigure 6. In this case the teeth '30 lock respectivelybeneath the tooth n and When the teeth 30 engage the ribs, the sashesare set vertically in their guides. It is well known that the sliding ofthe sashes is difficult if there is sufllcient play to prevent a slightinclination of the sashes. Finally, the rack 21 facilitates engagementof the teeth 30 with the teeth l and 24 by producing a vibratorymovement of the toothed member 23.

In the modified construction shown in Figure and those based thereon,the vertical members 39 are fixed in the grooves 40 of the sashes 4| andare fitted with undulated racks instead of the triangular teeth l0 and24. Each rack is engaged by a circular disk 42 under tension of a coilspring 43 tending to rotate the common shaft 44 so that the disks engagein the indentations. The disks may be fixed or rotatable on their commonshaft '44. The latter is mounted in a bracket 45 fixed to the frame 46into which it screws at its threaded end 41, whereby the axial positionis properly adjusted.

The shaft 44 carries an external lever 48 from which is suspended a pullcord 49 for rotating the shaft in order to disengage the disks 42 fromthe racks.

Although specific embodiments of the invention have been illustrated anddescribed, it will be understood that various alterations in the detailsof construction may be made without departing from the scope of theinvention as indicated by the appended claims.

What I claim is:

1. A sliding sash window comprising a fixed frame, a pair of sashesslidably mounted in said frame, a pulley mounted in the top of saidframe, a cable trained over said pulley and attached to said sashes forsuspending the latter, the upper sash being heavier than the lower sash,a toothed member mounted vertically in an edge of each sash, ahorizontally slidable toothed member mounted in said frame, a springacting on the last named member for bringing the .teeth thereof intoengagement with the teeth of the first named toothed members, and abutton carried by the horizontal toothed member for releasing theengagement of the teeth, whereby said sashes move automatically byreason of their unbalanced weight, the first named toothed members beingof reduced thickness between the teeth thereof to provide spaces forreceiving the horizontally slidable teeth, one of the first namedtoothed members having an undulated edge opposite the teeth thereof toaffect a vibratory movement by contact with said horizontally movableteeth.

2. A sliding sash window comprising a fixed frame, a pair of sashesslidably mounted in said frame, a pulley mounted in the top of saidframe, a cable trained over said pulley and attached to said sashes forsuspending the latter, the upper sash being heavier than the lower sash,a toothed member mounted vertically in an edge of each sash, ahorizontally slidable toothed member mounted in said frame, a springacting on the last named member for bringing the teeth thereof intoengagement with the teeth of the first named toothed members, and abutton carried by' the horizontal toothed member for releasing theengagement of the teeth, whereby said sashes move automatically byreason of their unbalanced weight, the first named toothed members beingof reduced thickness between the teeth thereof to provide spaces forreceiving the horizontally slidable teeth, extensions at the ends of thefirst named toothed members, a single tooth on each extension andadapted for locking engagement with the horizontally slidable I memberin the locking position.

3. A sliding sash window comprising a fixed frame, a pair of sashesslidably mounted in said frame, a pulley mounted in the top of saidframe, a cable trained over said pulley and attached to said sashes forsuspending the latter, the upper sash being heavier than the lower sash,a toothed member mounted vertically in an edge of each sash, ahorizontally slidable toothed member mounted in said frame, a springacting on the last named member for bringing the teeth thereof intoengagement with the teeth of the first named toothed members, and abutton carried by the horizontal toothed member for releasing theengagement of the teeth, whereby said sashes move automatically byreason of their unbalanced weight, the first named toothed members beingof reduced thickness between the teeth thereof to provide spaces forreceiving the horizontally slidable teeth, extensions at the ends of thefirst named toothed members, a single tooth on each extension andadapted for locking engagement with the horizontally slidable teeth, andmeans for maintaining said horizontally slidable member in the lockingposition, said means comprising a tongue carried by said button andanother tongue carried by said frame and with which the first tongue isengageable.

4. A sliding sash window comprising a fixed frame, a pair of sashesslidably mounted in said frame, a pulley mounted in the top of saidframe,

a cable trained oversaid pulley and attached to said sashes forsuspending the latter, the upper sash being heavier than the lower sash,a toothed member mounted vertically in an edge of each sash, bracketmountedin said frame, a shaft mounted in said bracket and having one endthreaded therein, disks carried by said shaft and adapted to engage saidtoothed members, a spring tending to turn said threaded shaft to bringsaid disks into engagement with said toothed members, and a levercarried by said shaft for rotating the shaft in the opposite directionto disengage said disks.

5. A sliding sash window comprising a fixed frame, a pair of sashesslidably mounted in said frame, a pulley mounted in the top of saidframe, a. cable trained over said pulley and attached to said sashes forsuspending the latter, the upper sash being heavier than the lower sash,a toothed member mounted vertically in an edge of each sash, ahorizontally slidable toothed member mounted in said frame, a springacting on the last named member for bringing the teeth thereof intoengagement with the teeth of the first named toothed members, and abutton carried by the horizontal toothed member for releasing theengagement of the teeth, whereby said sashes move automatically byreason of their unbalanced weight, the first named toothed members beingof reduced thickness between the teeth thereof to provide spaces forreceiving the horizontally slidable teeth, extensions at the ends of thefirst named toothed members, a single tooth on each extension andadapted for locking engagement with the horizontally slidable teeth,means for maintaining said horizontally slidable member in the lockingposition, said means comprising a tongue carried by said button andanother tongue carried by said frame and with which the first tongue isengageable, and another tongue carried by said frame, between the frameand the second named tongue, for engagement with the first named tongue,whereby to compress said spring and hold the horizontally slidable teethin locking engagement with the teeth on said extensions.

FELIX ALBERT.

